如何Center图标和文字的一款Android按钮的宽度设置为QUOT&;填充母" [英] How to center icon and text in a android button with width set to "fill parent"
问题描述
我想有一个Android按钮使用图标+文字里面居中。我使用的是drawableLeft属性设置IMG,这项工作做得很好,如果按钮具有WRAP_CONTENT的宽度,但我需要延伸到最大宽度,所以我用宽FILL_PARENT。这会将我的图标,直接到按钮的左边,我想按钮里面既图标和文本为中心。
I want to have an Android Button with icon+text centered inside it. I'm using the drawableLeft attribute to set the img, this work well if the button has a width of "wrap_content" but I need to stretch to max width so I use width "fill_parent". This moves my icon straight to the left of the button and I want both icon and text centered inside the button.
我已经尝试设置填充但只允许给一个固定值,所以它不是我所需要的。我需要有在中心图标+文字对齐。
I've try setting up the padding but this only allows to give a fix value so it is not what I need. I need to have icon+text aligned in the center.
<Button
android:id="@+id/startTelemoteButton"
android:text="@string/start_telemote"
android:drawableLeft="@drawable/start"
android:paddingLeft="20dip"
android:paddingRight="20dip"
android:width="fill_parent"
android:heigh="wrap_content" />
任何建议我怎么能归档?
Any suggestion how could I archive that?
推荐答案
安卓drawableLeft始终保持安卓以下属性来从左边框的距离。当按钮没有被设置为机器人:宽度=WRAP_CONTENT,它将始终挂到左
android:drawableLeft is always keeping android:paddingLeft as a distance from the left border. When the button is not set to android:width="wrap_content", it will always hang to the left!
使用的Android 4.0(API级别14)可以使用<一个href="http://developer.android.com/reference/android/R.attr.html#drawableStart">android:drawableStart属性将一个绘制的文本的开始。唯一的向后兼容的解决方案,我想出了是使用 ImageSpan 创建文字+图片Spannable:
With Android 4.0 (API level 14) you can use android:drawableStart attribute to place a drawable at the start of the text. The only backward compatible solution I've come up with is using an ImageSpan to create a Text+Image Spannable:
Button button = (Button) findViewById(R.id.button);
Spannable buttonLabel = new SpannableString(" Button Text");
buttonLabel.setSpan(new ImageSpan(getApplicationContext(), R.drawable.icon,
ImageSpan.ALIGN_BOTTOM), 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
button.setText(buttonLabel);
在我来说,我需要还调整了android:按钮的重力属性,使它看起来居中:
In my case I needed to also adjust the android:gravity attribute of the Button to make it look centered:
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="32dp"
android:minWidth="150dp"
android:gravity="center_horizontal|top" />
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